Shaft lining



' Feb, 22, 1927.

w. BREH.

V SHAFT LINING oriinal Filed Aug. 24. 1921 essere@ Pet. 22, i927.

wILi-IELM BREIL, or nssnmBRnDENnY, GERMANY."

SHAFT LINING'.

. Application iled August 24, 1.9.21, Serial No. 495,090, andin Germanyiugust, 19,19. i Renewedanuary" (saANTEnUNnEn THE raovisicivs er THE .fier orl nasen s, i921, 4i srii'r.'i.., ieiaifY My invention refers to a lining for shafts, .j constructed of tubbings and concrete, and more especially vto a lining intendedl for shafts built by the freezing process. f

In order to render such shaft lining entirely impervious to water it should have such dimensions that even befor'e the concrete is inserted, the tubbings are able to withstand the pressure of the rock. In this casev the tub-hing may be rendered watertight after the rock has been thawed whereupon the concrete is inserted after 'the-'effect of the freezing has subsided completely.

According to the present invention, the tubbings are formed of concentric rings which are connected together, by `ineans of vertical and horizontal' ribs. In korder to render the intermediate space between the two shells of the iron lining accessible for rendering it watertight and for inserting the concrete, I prefer making the external ring segment somewhat higher than the in-' ner one. To fill up the space between two superposed sections of tubbing rings, a removable intermediate ring, likewise made in sections, may be inserted on the inside.

In thecase of tubbing sections constructed with double walls, the inner ringy segments being lower than the outer ones are preferably made stronger than these latter, in order that in case of the inner filling rings not being inserted5 the iron lining shall possess sufficient strength. Y

As long as the inner vfilling rings are not inserted the interior of the tubbings is accessible for rendering them watertightand for inserting concrete.

While the lowertubbing segments are being fitted, the segments of the internal wall must be kept suspended and for this reason they may be attached to the outer segments of the ring by means ofl brackets consisting of vertical ribs in which apertures are provided. v

In the drawings aftiXed to this specification and forming part thereof a shaft lining embodying my invention is illustrated by way of example,

Fig. l being a vertical section, while Fig. 2 is as plan view of an individual tubbing segment.

Referring to the drawings, each tubbing section consists of an outer ring segment a and an inner, lower ring segment b'whieli are connected together by vertical ribs (Z and f' horizontal ribs c', respectively. Suitable apertures are provided in these ribsin order that the inner space to be filled in with concrete, forms Van integral whole and that serted on the insidewhich are likewise made in sections. v After thev shaft lining has been built up completely ofY cast tubbings the various intermediate ring sections are removedone after' the other in order to render the interior accessible, and are subsequently reiiiserted. After these -rlng sectionsV have `been removed, the interior'is rendered accessible for waterproofing the -spgaces between the varioustubbing sections.

The concrete is inserted in stagesthrough the gaps produced in the interior wall by the removal of the intermediate ringsA I claim:

l. In a metallic shaft lining in combination, an inner and an outer concentric ring, an open work connection ybetween said rings, the outer ring being longer in axial direction than the inner one, and aremovable intermediate 'ring adjacent to said inner ring.

2. In a metallic shaft lining in combination, an inner and an4 outer concentricrin'g section, an open work connection between said sections, the outer section being longer in axial direction than the inner one, and a re'- mov'able interinediatering section adjacent to said inner section. f

In a metallic shaft lining in combination, an inner and an outer concentric ring section, an open Work connection between said sections, the outer section being longer in axial direction than the inner one, a removable intermediate ring section adjacent' to said inne-r section and vertical ribs connecting said inner section to the outer one.

4. lIn a shaft lining in combination, a plurality of superposed outer and inner concentric rings, the outer rings being longer in axial direction than the inner ones and abutting against one another to form a cylinder, an openwork connection between the outer and inner rings, removable intermediate rings flllingthe gaps between adjoining es Y' Cil inner rings and means for interconnecting said superposed rings.

5. In a shaft lining in combination, a plii-V rality of superposed outer and inner concentric ring sections, the outer seetionsrvbeing longer in axial direction than the inner ones and abutting against one another to forni a cylinder section, an openwork connection between the outer and inner sections, removable intermediate sections fitting the gaps between adjoining innerseetions and ineans for interconnecting said Supei'posed Sections.

6. Ina shaft lining in combination, a plurality of superpoeed outer and inner coneenH trie ring sections, the outer sections being longer in axial direction than the inner ones and abutting against one another to form a cylinder section, horizontal and VerticalY openvvork connection between tlie outer and inner sections, removable intermediate sections fitting the gaps between adjoining in- 

